fs/yaffs2/yaffsfs.c

55  * A handle is different than an fd because you can use dup()
56  * to create a new handle that accesses the *same* fd. The two
57  * handles will use the same offset (part of the fd). We only close
58  * down the fd when there are no more handles accessing it.
60  * More than one fd can currently access one file, but each fd
76 	int handleCount:10;	/* Number of handles for this fd */
155 	struct yaffsfs_FileDes *fd = yaffsfs_HandleToFileDes(handle);
157 	if (fd && fd->handleCount > 0 &&
158 	    fd->inodeId >= 0 && fd->inodeId < YAFFSFS_N_HANDLES)
159 		return &yaffsfs_inode[fd->inodeId];
284 	struct yaffsfs_FileDes *fd;
292 		fd = &yaffsfs_fd[i];
293 		if (fd->handleCount < 1) {
294 			memset(fd, 0, sizeof(struct yaffsfs_FileDes));
295 			fd->inodeId = -1;
296 			fd->handleCount = 1;
302 	/* Dump the handle because we could not get a fd */
332 	struct yaffsfs_FileDes *fd;
335 		fd = &yaffsfs_fd[fdId];
336 		fd->handleCount--;
337 		if (fd->handleCount < 1) {
338 			if (fd->inodeId >= 0) {
339 				yaffsfs_PutInode(fd->inodeId);
340 				fd->inodeId = -1;
364 	struct yaffsfs_FileDes *fd;
370 		fd = yaffsfs_HandleToFileDes(i);
376 		if (fd && fd->handleCount > 0 && obj && obj->my_dev == dev) {
377 			fd->handleCount = 0;
378 			yaffsfs_PutInode(fd->inodeId);
379 			fd->inodeId = -1;
780 	struct yaffsfs_FileDes *fd = NULL;
830 		fd = yaffsfs_HandleToFileDes(handle);
971 			fd->inodeId = inodeId;
972 			fd->reading = readRequested;
973 			fd->writing = writeRequested;
974 			fd->append = (oflag & O_APPEND) ? 1 : 0;
975 			fd->position = 0;
976 			fd->shareRead = shareRead;
977 			fd->shareWrite = shareWrite;
982 			if ((oflag & O_TRUNC) && fd->writing)
1069 	struct yaffsfs_FileDes *fd = NULL;
1086 	fd = yaffsfs_HandleToFileDes(handle);
1089 	if (!fd || !obj) {
1093 	} else if (!fd->reading) {
1104 			startPos = fd->position;
1165 				fd->position = startPos + totalRead;
1191 	struct yaffsfs_FileDes *fd = NULL;
1208 	fd = yaffsfs_HandleToFileDes(handle);
1211 	if (!fd || !obj) {
1215 	} else if (!fd->writing) {
1222 		if (fd->append)
1227 			startPos = fd->position;
1284 				fd->position = startPos + totalWritten;
1295 int yaffs_write(int fd, const void *buf, unsigned int nbyte)
1297 	return yaffsfs_do_write(fd, buf, nbyte, 0, 0);
1300 int yaffs_pwrite(int fd, const void *buf, unsigned int nbyte, loff_t offset)
1302 	return yaffsfs_do_write(fd, buf, nbyte, 1, offset);
1352 	struct yaffsfs_FileDes *fd = NULL;
1357 	fd = yaffsfs_HandleToFileDes(handle);
1360 	if (!fd || !obj)
1363 	else if (!fd->writing)
1380 	struct yaffsfs_FileDes *fd = NULL;
1386 	fd = yaffsfs_HandleToFileDes(handle);
1389 	if (!fd || !obj)
1398 			if ((fd->position + offset) >= 0)
1399 				pos = (fd->position + offset);
1407 			fd->position = pos;
1678 int yaffs_fstat(int fd, struct yaffs_stat *buf)
1690 	obj = yaffsfs_HandleToObject(fd);
1772 int yaffs_futime(int fd, const struct yaffs_utimbuf *buf)
1779 	obj = yaffsfs_HandleToObject(fd);
1854 int yaffs_fsetxattr(int fd, const char *name,
1867 	obj = yaffsfs_HandleToObject(fd);
1939 int yaffs_fgetxattr(int fd, const char *name, void *data, int size)
1951 	obj = yaffsfs_HandleToObject(fd);
2024 int yaffs_flistxattr(int fd, char *data, int size)
2036 	obj = yaffsfs_HandleToObject(fd);
2109 int yaffs_fremovexattr(int fd, const char *name)
2121 	obj = yaffsfs_HandleToObject(fd);
2140 int yaffs_get_wince_times(int fd, unsigned *wctime,
2148 	obj = yaffsfs_HandleToObject(fd);
2175 int yaffs_set_wince_times(int fd,
2184 	obj = yaffsfs_HandleToObject(fd);
2334 int yaffs_fchmod(int fd, mode_t mode)
2345 	obj = yaffsfs_HandleToObject(fd);